package aop;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

@Aspect
@Component
public class TransactionAspect {
    private static final Logger log= LoggerFactory.getLogger(TransactionAspect.class);

    @Pointcut("execution(* service..*.*(..))")
    public void pt(){}

    @Before(value = "pt()")
    public void before(JoinPoint jp){
        log.info("[TransactionAspect前置增强]模拟打开数据库连接并开启事务...");
        log.info("SqlSession sqlSession=MyBatisUtil.createSqlSession(false);");
    }

    @AfterReturning(value = "pt()",returning = "result")
    public void afterReturning(JoinPoint jp,Object result){
        log.info("[TransactionAspect后置增强]模拟正常完成业务提交事务...");
        log.info("session.commit();");
    }

    @AfterThrowing(value = "pt()",throwing = "e")
    public void afterThrowing(JoinPoint jp,Throwable e){
        log.info("[TransactionAspect前置增强]模拟业务异常回滚事务，异常信息为"+e.getMessage());
        log.info("session.rollback");
    }

    @After(value = "pt()")
    public void after(JoinPoint jp){
        log.info("[TransactionAspect最终增强]模拟业务完成适当资源...");
        log.info("MyBatisUtil.closeSqlSession(sqlSession);");
    }
}
